![Takeuchi TB23R Repair Manual [Compact Excavator]](https://youfixthis.com/wp-content/uploads/2015/11/2015-11-16_11-24-29-300x300.png)
Strip these compact excavators to the frame and put them back to factory spec: that is what this Takeuchi TB025, TB030, TB035 Workshop Manual (OEM #WE3-301E2) is built for. The hydraulic schematics trace the full circuit from pump through control valve to motor, the wiring diagrams map the electrical system, and step-by-step procedures cover every major assembly. Troubleshooting works through slew failures, boom cylinder drift, travel curve problems, and dead-stick scenarios where nothing moves. Exploded views break down each assembly with hardware callouts, so you know what you are pulling before the first bolt turns. Torque the PF 1/8 hydraulic hose union nut to 1.0 kgf-m, and confirm your track roller tread diameter holds 93 ±0.5 mm. Stop chasing faults with a pressure gauge and a guess. Download it, search by keyword, and pull the exact procedure up on your phone at the machine.
What's Inside This Takeuchi TB025, TB030, TB035 Manual
| System | Pages | Key Topics |
|---|---|---|
| Front Matter | 1-4 | Compact Excavator, Workshop Manual, Serial Number, Takeuchi Mfg. Co., Ltd., Foreword, Machine Front and Rear, Left and Right |
| General | 5-16 | Cautions During Disassembly and Assembly, Cautions During Removal and Installation of the Hydraulic Units, Cautions During Removal and Installation of Piping, Handling of Seals |
| Specifications | 17-68 | Names of Components, Dimensions, Lifting Capacities, Weights, Fluid Capacities, Recommended Lubricants, Types of Crawler Belts |
| Machine Configuration | 69-136 | External View, Drive System, Slew System, Travel System, Upper Frame, Control System, Attachments, Hydraulic System |
| Hydraulic Units | 137-304 | Hydraulic Pump [TB025, TB030], Hydraulic Pump [TB035], Control Valve, Pilot Valve, Cylinder, Travel Motor, Slew Motor |
| Troubleshooting | 305-362 | Overall Machine (No Operations CAN Be Done, All Operations CAN Be Done, But There Is No Power, Boom, Bucket, Slew and Arm Do Not Move at All, Or the Speed Is Low) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Cushion Rubber Installation Nut Tightening Torque | 9.9 kgfm | p. 82 |
| Return Filter Nominal | 10 u | p. 125 |
| Hydraulic Hoses Union Nut (PF) 1/8 size torque | 1.0 +0.5 kgf-m | p. 14 |
| Track Roller Outer Dia. of Tread (Basic Dimension) | 93 ±0.5 mm | p. 50 |
| Idler Outer Dia. of Tread (Steel Crawler Basic Dimension) | 305 mm | p. 52 |
| Sprocket Outer Diameter (Basic Dimension) | 385.6 mm | p. 51 |
| Engine Oil Capacity (Upper Limit) | 4.7 L | p. 41 |
| Engine Cooling System Capacity | 5 L | p. 41 |
| Hydraulic Oil Service Interval | Every 1,000 hours | p. 42 |
| General Tightening Torque (M10 x 1.5) | 47.1 N-m | p. 16 |
| TB025 | ||
| Hydraulic Oil Tank Capacity | 69 L | p. 41 |
| TB030, TB035 | ||
| Fuel Tank Capacity | 34 L | p. 41 |
Takeuchi TB025, TB030, TB035 Common Problems This Manual Covers
Takeuchi TB025 excavator boom cylinder and bucket respond poorly or show no movement when under heavy load. p. 341
Measure system pressure and compare to baseline. Check the troubleshooting procedures for boom isolation tests. Verify the hydraulic oil has been changed at the required interval of every 1,000 hours as listed on page 42. Inspect control valve spools for scoring.
Manual Section: V . TroubleshootingMachine travel is impossible on one side or speed drops causing the track to pull right. p. 318
Test the travel motor plunger switching pressure and verify it reads 6-7 kgf/cm² as noted on page 36. Inspect the track rollers for wear, ensuring the outer diameter meets the basic dimension of 93 ±0.5 mm shown on page 50. Replace worn components.
Manual Section: V . TroubleshootingEngine turns over slowly or will not start consistently during cold morning attempts. p. 309
Trace the starter circuit against the wiring diagram and check battery voltage. Verify the engine oil capacity does not exceed the upper limit of 4.7 L found on page 41. Clean all main ground connections and test the starter relay.
Manual Section: V . TroubleshootingHydraulic fluid leaks around the pilot valve fittings or high pressure lines crack near the swivel joint. p. 304
Examine the union nuts (PF) 1/8 size for cracks and retorque to exactly 1.0 +0.5 kgf-m using the guidelines on page 14. Drain the system if repairing main lines and refill with clean fluid. Confirm proper routing against the hydraulic schematic on page 125.
Manual Section: V . TroubleshootingFrequently Asked Questions
How to reset the hydraulic system on a Takeuchi TB025/TB030/TB035?
Start the engine and let it idle for about 5 minutes. With the engine at slow speed, extend and retract the cylinders 4 or 5 times, moving the piston rod to a position 100 mm before the end of the stroke without applying relief. Then run the engine at top speed and repeat, after which you return to slow speed and move the piston rod to the stroke end, applying relief. Full procedures are on page IV-84 for cylinders and page III-48 for attachments.
What are the torque specs for the track rollers, swing bearing, or engine components on a Takeuchi TB025/TB030/TB035?
On engine installation, the cushion rubber installation nut tightens to 9.9 kgfm. The slew motor installation bolt takes 10.4 ±0.5 kgfm, and the slew bearing installation bolt runs 10.4 ±0.5 kgfm on both inner and outer race. Track roller installation nuts tighten to 6.7 ±0.7 kgfm (M10) or 16.1 ±0.8 kgfm (M14).
What are the replacement specifications for hydraulic filters?
The hydraulic pump system runs a suction filter at 150MESH and a return filter rated at a nominal 10µ. Clean or replace either one once it clogs to head off cavitation and keep hydraulic oil flowing. The hydraulic circuit diagrams on pages 125-127 show the layout.
What are the replacement specifications for fuel filters?
A 'FUEL FILTER' appears within the fuel tank and piping system, shown in the diagram on page III-10. Specific replacement specifications or intervals for it are not provided in the document.
How quickly can I access this Takeuchi TB025, TB030, TB035 manual after buying?
Immediate download of the complete 362-page searchable WORKSHOP MANUAL. Open it on any device, whether that is the laptop at your desk or the phone in the field.
Can I print specific sections of this Takeuchi TB025, TB030, TB035 manual?
Yes. The PDF carries no DRM restrictions, so you can print any page or section your shop needs. It works with any standard printer.
Can I find hydraulic circuit diagrams in this Takeuchi TB025, TB030, TB035?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings.
Document Quality
This document is a scanned PDF, not a native digital file, but it includes an OCR layer, so you can search and copy text throughout the manual. The text is generally crisp and easy to read, with minimal blurriness. Diagrams and illustrations are raster images, appearing clear at normal viewing, though very fine details in some complex hydraulic or electrical schematics might lose a bit of crispness when highly zoomed. Pages are mostly clean with few scan artifacts, though some exhibit slight skewing. Be aware that there are numerous blank pages interspersed throughout the manual, which serve as filler.
Reviews
There are no reviews yet.